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DC1307A Datasheet, PDF (2/22 Pages) Linear Technology – Complete Switch Mode Power Supply
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LTM8027
Absolute Maximum Ratings
(Note 1)
VIN Voltage.................................................................65V
BIAS1......................................................................... 15V
BIAS2......................................................................... 24V
SYNC, ADJ, RT, RUN, SS Voltages...............................5V
Current into RUN Pin (Note 2)...................................1mA
VOUT, AUX..................................................................25V
Current Out of AUX.............................................. 200mA
Internal Operating Temperature (Note 3)
E-, I-Grade.......................................... –40°C to 125°C
MP-Grade........................................... –55°C to 125°C
Maximum Soldering Temperature.......................... 245°C
Storage Temperature Range................... –55°C to 125°C
Pin Configuration
TOP VIEW
11
10
9
8
AUX 7
BIAS1 6
SS 5
RUN 4
BIAS2 3
ADJ 2
1
VOUT
BANK 1
GND
BANK 2
VIN
BANK 3
ABCDE FGHJ KL
RT SYNC
LGA PACKAGE
113-LEAD (15mm × 15mm × 4.32mm)
TJMAX = 125°C, θJA = 12.2°C/W, θJC(TOP) = 9.3°C/W,
θJC(BOTTOM) = 3.6°C/W, θJBOARD = 7.54°C/W
θ VALUES DETERMINED PER JESD 51-9
WEIGHT = 2.6 GRAMS
Order Information
LEAD FREE FINISH TRAY
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE (Note 3)
LTM8027EV#PBF
LTM8027EV#PBF
LTM8027V
113-Lead (15mm × 15mm × 4.32mm) LGA –40°C to 125°C
LTM8027IV#PBF
LTM8027IV#PBF
LTM8027V
113-Lead (15mm × 15mm × 4.32mm) LGA –40°C to 125°C
LTM8027MPV#PBF LTM8027MPV#PBF LTM8027V
113-Lead (15mm × 15mm × 4.32mm) LGA –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
Electrical Characteristics The l denotes the specifications which apply over the full internal operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 20V, BIAS1 = BIAS2 = 10V, RUN = 2V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN
Input DC Voltage
(Note 5)
l 4.5
60
V
VOUT
Maximum Output DC Voltage
0A < IOUT ≤ 4A, VIN = 48V
24
V
IOUT
Output DC Current
VIN ≤ 60V, VOUT = 12V, (Note 4)
0
4
A
VIN(START)
Minimum Start Voltage
7.5
V
∆VOUT/∆VIN
∆VOUT/∆ILOAD
VUVLO(RISING)
Line Regulation
Load Regulation
Input Undervoltage Lockout Threshold
(Rising)
VOUT = 12V, 15V< VIN < 60V, ILOAD = 4A
VOUT = 12V, VIN = 24V, 0A < ILOAD ≤ 4A
(Note 5)
0.2
%
0.2
%
4.6
V
VUVLO(FALLING) Input Undervoltage Lockout Threshold
(Falling)
(Note 5)
3.7
V
8027fb
2
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